Recently, reinstalled Hardy in same partition and converted grub legacy
(in Hardy) to grub2 too. Of course the uuid for Hardy partition is
changed. Karmic is already in grub2, and when I update-grub (command in
grub2 is grub-mkconfig), to 'synchronize' grub.cfg (menu.lst in grub
legacy), the change in uuid number is not updated in Karmic. It does not
pose a problem to me as I had a 'first grub' partition to handle
booting. However, as in most cases where there is no 'first grub', it
may pose problems in booting up because grub, including grub legacy,
boots up using uuid numbers. I also wonder if grub legacy may have
similar issues. (I don't know now as I don't have any more grub legacy).
Thought you might want to watch out for it. Any comments on things I may
have missed before I send a bug report?
Regards,
Goh Lip